Contagious redirects here. For the Isley Brothers song of that name, see Contagious (song).

A disease is an abnormal condition of the body or mind that causes discomfort, dysfunction, or distress to the person afflicted or those in contact with the person. Sometimes the term is used broadly to include injuries, disabilities, syndromes, infections, symptoms, deviant behaviors, and atypical variations of structure and function, while in other contexts these may be considered distinguishable categories.

Pathology is the study of diseases. The subject of systematic classification of diseases is referred to as nosology. The broader body of knowledge about human diseases and their treatments is medicine. Many similar (and a few of the same) conditions or processes can affect animals (wild or domestic). The study of diseases affecting animals is veterinary medicine. Plants as well can suffer from a variety of processes such as infection, nutrient deficiency, or deleterious mutation. The study of diseases affecting plants is termed plant pathology.

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Desk-ercises: How to Keep Fit and Fabulous at Your Desk! | Healthmad http://t.co/khF96DXs
artez069 (arnold guanlao) Thu, 02 Feb 2012 12:47:37 -0000
Desk-ercises: How to Keep Fit and Fabulous at Your Desk! | Healthmad http://t.co/khF96DXs
Symptoms and Treatment of Bacterial Conjunctivitis http://t.co/ay6WH9Cg #Conjunctivitis #eyes
TriondLady (Triond Lady) Thu, 02 Feb 2012 12:27:50 -0000
Symptoms and Treatment of Bacterial Conjunctivitis http://t.co/ay6WH9Cg #Conjunctivitis #eyes
Vietnam reports 2nd bird flu death in a month http://t.co/T3BOjsHv | Diseases
PTHSN (PT Health Support) Thu, 02 Feb 2012 11:44:13 -0000
Vietnam reports 2nd bird Subscribe to Conditions_and_Diseases RSS feed